Summary: Saturn's Exploration Beyond Cassini-Huygens
T. Guillot, S. K. Atreya, S. Charnoz, M. K. Dougherty, and P. Read, in Saturn from Cassini-
Huygens (M. K. Dougherty et al., eds.), Chapter 23, pp 745-761, 2009, DOI 10.1007/978-1-4020-
9217-6_23, Springer Dordrecht, Heidelberg-London-New York.
Chapter 23
Saturn's Exploration Beyond Cassini-Huygens
Tristan Guillot, Sushil Atreya, Sébastien Charnoz, Michele K. Dougherty, and Peter Read
Abstract For its beautiful rings, active atmosphere and mys-
terious magnetic field, Saturn is a fascinating planet. It also
holds some of the keys to understanding the formation of our
Solar System and the evolution of giant planets in general.
While the exploration by the Cassini-Huygens mission has
led to great advances in our understanding of the planet and
its moons, it has left us with puzzling questions: What is
the bulk composition of the planet? Does it have a helium
core? Is it enriched in noble gases like Jupiter? What pow-
ers and controls its gigantic storms? We have learned that
we can measure an outer magnetic field that is filtered from
its non-axisymmetric components, but what is Saturn's inner
magnetic field? What are the rings made of and when were